78921790

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{99901}}^1$

素因数の和:99987

約数の個数: 16

約数和(自身を含む): 143858880

約数和(自身を除く): 64937090

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 99901, 199802, 499505, 999010, 7892179, 15784358, 39460895, 78921790]

約数ペア:

[(1, 78921790), (2, 39460895), (5, 15784358), (10, 7892179), (79, 999010), (158, 499505), (395, 199802), (790, 99901)]